chore(deps): update actions/checkout action to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/checkout	action	major	v5 → v6

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Release Notes

actions/checkout (actions/checkout)

v6

Compare Source

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Slowest examples

Top 10 slowest examples (1.13 seconds, 40.59% of total time)

Example	Description	Time in seconds
spec/unit/recipes/default_spec.rb:29	iis::default when iis components provided, on an unspecified platform converges successfully	0.4173
spec/unit/recipes/default_spec.rb:73	iis::default When source provided, on an unspecified platform installs features with source	0.11535
spec/unit/resources/install_spec.rb:87	iis_install When start_iis is true starts iis service with name W3WVC	0.09694
spec/unit/recipes/mod_aspnet_spec.rb:27	iis::mod_aspnet when all attributes are default, on an unspecified platform converges successfully	0.09433
spec/unit/recipes/mod_application_initialization_spec.rb:27	iis::mod_application_initialization when all attributes are default, on an unspecified platform converges successfully	0.07736
spec/unit/recipes/default_spec.rb:69	iis::default When source provided, on an unspecified platform converges successfully	0.06976
spec/unit/resources/install_spec.rb:49	iis_install When install_mode is powershell, on an unspecified platform installs windows feature IIS	0.06662
spec/unit/resources/install_spec.rb:125	iis_install When source provided, on an unspecified platform converges successfully	0.06645
spec/unit/recipes/mod_auth_anonymous_spec.rb:27	iis::mod_auth_anonymous when all attributes are default, on an unspecified platform converges successfully	0.06626
spec/unit/recipes/mod_auth_digest_spec.rb:27	iis::mod_auth_digest when all attributes are default, on an unspecified platform converges successfully	0.06584